Malicious PDF — malware analysis report

Static analysis result for SHA-256 4846c299d19ad952…

MALICIOUS

PDF

47.1 KB Created: 2020-08-27 13:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a043550cc22c60484426ad5e9c23ec1 SHA-1: 88228ba4813b17a7ca4c3c370623d8d39f7dc600 SHA-256: 4846c299d19ad9524ab8bc1baf15af1fa8e0ba9cd51ed2998afc067af5ed4451
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm and a direct link to a malicious redirector, disguised as a solution manual. The primary heuristic indicates the PDF links to known malicious redirector infrastructure. The document body contains the URL https://ttraff.cc/pify?keyword=solucionario+ecuaciones+diferenciales+nagle+4+edicion+pdf, which is likely used to redirect the user to a malicious site. Several other unknown URLs were also extracted.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=solucionario+ecuaciones+diferenciales+nagle+4+edicion+pdf
    • http://files.sabelrentals.com/uploads/1/3/1/4/131454151/2c50888d52d038.pdf
    • http://bezelofa.backnbalance.org/uploads/1/3/2/6/132682883/tawezenubo.pdf
    • http://files.germane2germaine.com/uploads/1/3/1/4/131454521/mufomekivawugu_gesobos_gebafuporewod.pdf
    • http://temaba.bodyworkbybarb.com/uploads/1/3/1/8/131856772/ruledibifuxurupuga.pdf
    • http://duwefefe.templemedsga.com/uploads/1/3/0/8/130873947/xepipokasuzudiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/answer_and_counter_petition_for_paternity.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4241/files/nijepufunonel.pdf
    • https://cdn.shopify.com/s/files/1/0436/6221/3270/files/oxford_dictionary_english_to_odia.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/chocapic13_shaders_1._8._9.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/kobemolenavuvobiwom.pdf
    • https://cdn.shopify.com/s/files/1/0437/7667/1895/files/penatalaksanaan_bronkitis_akut.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/46005106453.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/magumemamenatex.pdf
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/gupezolinupesotebew.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7684/files/99613488237.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/mag

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b1f.bin
0dec8f127fb49dc5d7b0f79478daac48f8951f73ca4afcb598284b8ede9d88ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1F 5316 bytes
font_01_sfnt_off00007d32.bin
3cbb2d7723331b4d08c66e1f4055e727ec9294b02430cb671048a8fff61698bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D32 10792 bytes
font_02_sfnt_off0000a099.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xA099 4324 bytes